| 车身结构中焊点疲劳寿命预估 |
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| 引用本文： | 朱涛,高峰,刘国良.车身结构中焊点疲劳寿命预估[J].汽车技术,2006(2):37-40. |
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| 作者姓名： | 朱涛 高峰 刘国良 |
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| 作者单位： | 北京航空航天大学 |
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| 摘 要： | 采用焊点疲劳寿命预估方法,通过有限元分析并结合应力计算,即可计算出实际载荷工况下的焊点疲劳损伤。采用该方法对某轿车B柱结构焊点的寿命进行了预估,得出了各焊点的损伤和寿命分布情况,并预测出发生失效的部位为B柱与上横梁相交处,预测结果与实际发生的损坏部位一致。
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| 关 键 词： | 车身 点焊 疲劳寿命 计算 |
| 文章编号： | 1000-3703(2006)02-0037-03 |
| 修稿时间： | 12 28 2005 12:00AM |
Pre-Estimation of Fatigue Lifetime of Welding Spots of BIWs |
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| Zhu Tao,Gao Feng,Liu Guoliang.Pre-Estimation of Fatigue Lifetime of Welding Spots of BIWs[J].Automobile Technology,2006(2):37-40. |
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| Authors: | Zhu Tao Gao Feng Liu Guoliang |
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| Institution: | Beijing University of Aeronautics and Astronutics |
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| Abstract: | With the welding spot fatigue lifetime pre-estimation method,by combination of the finite element analysis and stress calculation,the welding spot fatigue damage under actual load can be calculated.With this method,lifetime of welding spots of the B-pillar of a car was pre-estimated,and damage of different welding spots and lifetime distribution were obtained,and it was predicted that failure will occur at intersection of the B-pillar and the upper cross-member.The predicated result is conformable to that of actual damage. |
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| Keywords: | Body Welding spot Fatigue lifetime Calculation |
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